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The total blood cholesterol concentrations, in mg/dL, are shown below for a random sample of six people. In the table below, x is the age of the subject and y is the subject's total cholesterol concentration. Find the 95% prediction interval when x = 53 years.
x (age) 36 43 53 67 66 78
y (mg/dL) 208 224 238 238 277 263
Using an appropriate statistical test determine if there is a significant association between gender and satisfaction with the new initiative.
A class has 13 women and 18 men. If student if selected randomly, determine the probability student is a woman?
Analyze the data using linear contrasts to make the following comparisons:
Create a 99 percent confidence interval for mean daily intake of milk. You may suppose daily intake amounts are usually distributed.
Let X 1 , X 2 , X 3 , X 4 be a random sample from a Poisson distribution with parameter λ and let Y = X 1 + X 2 + X 3 + X 4 . You decide to test λ = 1.60 versus λ
Using one proportion z test to find whether or not to support the claim - There is little evidence to reject H 0 , therefore they conclude the tvs are 20 pounds on average.
If p denotes the p -value of the corresponding hypothesis test, which of the following is true?
The population of IQ scores forms a normal distribution with mean of μ = 100 and a standard deviation of σ = 15. What is the probability of obtaining a sample mean greater than M = 105,
This result prompts a test administrator to claim that standard deviation for eighth graders on examination is less than 29.At a = 0.10, is there sufficient evidence to support administrator's claim?
Explain the value of test statistic using t distribution for the given value. Illustrate value of the t test statistic if you are testing a hypothesis.
Each egg was also measured for volume using a water displacement method. We wanted to know if the two methods agreed or not
Find a 95% confidence interval for the population mean selling price of all homes in this neighborhood.
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